Plate for grinding-mills



A. H. COPLAN AND A. BAlLL-OT.

PLATE FOR GRINDING MILLS. APPLICATION FILED JULY II. 1919. RENEWED OCT. 13. I920.

1,3 0,725, Patented Nov. 30, 1920.

3 SHEETS-SHEET I- INVENTUBS ALP/MMSEA/LLOIT ATTORNEY A. H. COPLAN AND A. BAILLOT.

PLATE FOR GRI G MILLS.

APPLICATION man JULY II. 19 ENEWED um. 13. I920.

1,360,725. Patented N0v.3 20.

3 SHEETS-S E INVENTUHS ARC/{MALI CoPu/v ALPb MSE 154/LL07'.

BY I ll? TTURNEY A. H. COPLAN AND A. BAILLOT.

PLATE FOR GRINDING MILLS. APPLICATION flLED JULY 11.1919. RENEWED OCT. 13,1920. 1,360, (25.

Patented Nov. 30, 1920.

3 SHEETS-SHEET 3- INVENTUBS w w u M.

I Wm H E 0 5 .w m M L A UNITED STATES PATENT OFFICE.

,ARGHIBALD corner; AND A'Lr r onsn BAILLOT, or HULL, QUEBEC, CANADA.

PLATE FOR GRINDING-MILLS.

Specification of Letters Patent. Patented N 1920 Application filed Julyll, 1919, Serial Noll3'10,061. Renewed October 13, 1920. Serial 110. 416,780.

To all whom it may concern: r M

j Be it known that we, ARCHIBALD H. Cor- LAN, gentleman, and ALrHoNsn 'BAILLOT, plant superintendent, citizens of Canada, residing at Hull, in the county of lVright and Province of Quebec, Canada, have invented certain new and useful Improvements in Plates for Grinding-Mills, of which the following is a specification.

This invention relates to improvements in grinding mills of either the cylindrical or conical shape by an improved diaphragmor plate. p 7

It has been found; in operation that in the ball and pebble types of grinding mills that certain of the outflow is bound to workout of the'outlet pipe and also from t me to tlme some 01" the ballsor pebbles flow-out, which might cause considerabledamage when pass-- ing through-a further process of treating the ore or other industrial products.

corrugated. I

A further object is to provide a plate having suitable slots therein which will not clog, and to this endwe provide slots having outwardly tapered sides in the direction of the flow of the ore. l

A further object is to provide a plate which can be divided into sections and inserted through the manhole of the mill.

A further object is to provide a specific locking means for the plate against one of the series of lining plates and having the next series of lining plates abutting it on its outer circumference.

lVith these and other objects in view, the invention consists in the'construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereunto appended. I

Figure l is a perspective View of conical shaped mill. part of the side being removed to show position of our invention therein, I Fig. 2 is a perspective view of a cylmr drical mill, part being broken away to show our plate therein, U

Fig. 3 is an enlarged front view of our invention. I I

Fig. 4e is a sectional view on the line 44: of Fig. 3, I v p 5 is an enlarged plan view of one of the retaining bolts,

ground by the use of balls or pebbles, we

provide a plate 10' which is removably held between the lining plates nearest the discharge end;

Referring more particularly to the other drawings which show the construction in more details, the plate 10 isdivided into any desired number of sections asat 10 .It is made inthese sections so that it canjbe put through the manhole 12 in the body part of the millandput into the proper position therein. 14 is a central plate to which the To overcome this feature, we provide a plate having radial slots out therethrough, the walls of such slots being parallel and 7 bolts 19 will not be allowed to turn and asthey are counter-sunk there will be little or no wear on the head ends of these bolts. The bolt after passing through the plate will extend through the orifice 18 and its extended end will have a nut 21 screwthreaded thereon so as to hold the plate 10 firmly against the lining plates 16. After all the plates have been bolted securely to the different lugs 17 and to' the central plate 14-, the next row of lining plates 22 are placed in position as shown in Fig. 4.. The general practice is to have the lining plates 16 and 22 abut each other at right angles to the sides of the plates. It will be noticed in Fig. i that part of the corner of the lining plates 22 is-cut oil so as to get a tight connection between the plate 10 and the lining plates 16 and 22.

In previous plates of this nature, straight slots have been cut so as to radiate from the center, but this has been found unsatisfae tory, as a long piece of shale ore coming edgewise against the slot will be allowed to of. theslots. This feature Will be foun dof considerable advantage as it strengthens the plate and gives .a variation tothe reception ofthe ore through the plate.

'Phe slotsas Well as having corrugated sides are tapered outwardly fromthe side through whieh th'ebre fiows. This feature hastbeen found to beef considerable advantage as the'm'ater'ial \vhen ground sufficiently small toi pass throughthe opening on the [inner side of the plate Will not bind With the s ides.

' of the slot'owing to their tapered formation, 7 and thus Wlll rel eve considerable amount slots are tapered. r V The sections of theplatelO overlap each 1 other as shown in"I ig.-6, the overlapping of expense in having to remove material which has become clogged in the slots. "It will be noted from reference to Figs 4 and 7 that both the ends and the sides oflflthe portion b eing -on the side nearest'the diseharg e It will be noted that theinner faoe of the plate is entirely free of any obstructionwhich might cause Wear to such parts 30 or cause the ore. to be pickedup or to cause Wear to the balls or pebbles. V

7 Erom the 'fqregoing itis thought that the -oonstruction of our invention Will be clearly understood, and therefore a more extended 35 explanation has been omitted.

A ball mill having a tapering shell, a sectional screen plate therein and "fastening means 01 securing in place the outer end 40 of said plate, consisting of sectionaldinings for said shell on opposite sides of, said plate, the lining sectionson one sideofsaid plate having'flanges inclined to the main portions thereof andhaving securing means clamp- 45 'ing them to said plate andthe liningsections on the opposite side of the platehavinpbeveled ends abutting against said plate.

n testimony whereof Weafiix our signaturesinthe presence'of two Witnesses.

' CQPLAN, e c ALBH SE B LLOT.

' Witnesses: V M.-lvloM LmN, i t D LRoY KENNEDY/ '7 

